Ammunitiontogo.com has a boat load of .222 Prvi Partizan 55gr. FMJ. I bought some last summer for the heck of it. Head shots on woodchucks out to 100 yards were no problem (pretty good results considering the FMJ bullet). Great for plinking, the brass is really good, and it's about as cheap as it gets.

EDIT: As far as hunting goes, just make sure you can legally use FMJ ammo before you make anything dead with it.